Your topic references a router model, not a wireless card. Perhaps you meant WPC54g?
Regardless, I use a linksys wrt54gs router and linksys wpc54gs (pcmcia) card (broadcom chipset); of course, the wireles card is the only thing that needs to be configured. I've used it under vl58 and am currently using under vl59 with WPA security (had previously used WEP as well). It works as expected without any problems to speak of. I use the default bcm43xx driver, wpa_supplicant for security support, and wifi-radar for connecting. If any of this sounds similar to your setup then perhaps I can help out. Just need to know your version of VL, and which wireless card you're using (brand, model, revision/version number).